Stump-extractor



(No Model.)

J. D. lvmlizlnffx..v A STUMP EXTRAGTOB..

No. 438,634. Patented ont. 21. 1890.

UNITED STATES PATENT Ormea..

JOHN D. MOELYA, OF METROPOLIS CITY, ILLINOIS.

STU M P-EXTRACTO R.

SPECIFICATION forming part of Letters Patent No. 438,634, dated October21, 1890.

Application filed July 5, 1890. Serial No. 357,844. (No model.)

To a/ZZ whom it may concern,.-

Be it known that I, JOHN D. MCELYA, a citizen of the United States,residing at Metropolis Oity, in the county of Massac and State ofIllinois, have invented a new and useful Stump-Extractor, of which thefollowing is a speciiication.

The invention relates to improvements in stump-extractors.

The object of the present invention is to simplify and improve theconstruction of stump-extractors and increase their strength anddurability, and enable the sweep-lever to conform to the motion of thedraft-animals without interfering with the rotation of the screw.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claim hereto appended.

In the drawings, Figure 1 is a perspective View of a stump-extractorconstructed in aecordance with this invention. Fig. 2isa verticalsectional view. Figs. 3 and 4 are detail perspective views of thecap-plate and the nut.

Referring to the accompanying drawings, 1 designates a derrick or frameapproximately pyramidal in shape and having its upper end truncated andcomposed of four inclined standards 2 and horizont-al crosspieces 3,arranged at different elevations and connecting the standards. The upperends of the standards are connected by a square plate 4, which is boltedto the standard and is provided with a central opening 5, and a socket6, surrounding the opening and having its upper face concave. The lowerends of the standards are secured to runners 7, provided with a chain 8,having centrally attached to it Whiflietrees 9, by which thestumpextractor is moved from place to place. The socket of the squareplate 4 is engaged by the lowerconvex face 10 of a nut 11, that has acentral threaded opening to receiveascrew 12, depending from the squareplate 4, and provided at its lower end with a ring 13 and adapted to beconnected with a stump in the usual manner by chains 14 and hooks 15.The convex face of the nut fits in the concave socket and is adapted tomove freely therein and permit a sweep-lever 16, secured to the nut tofreely conform with the motion of the draft-animal without interferingwith the screw, which is much smaller than the central opening 5 in thesquare plate. The convex or semi-spherical nut has formed integral withits upper iiat face a plate 17, projecting beyond the nut and providedwith perforations, through which pass bolts that secure the sweep-leverto the plate and nut, and the said plate is provided at its upper edgeswith longitudinal iianges 18, that project above the face of the plateand engage the sides of the sweep-lever and assist in securing the sameto the plate. One end of the sweep-lever is bent downward and isprovided with a doubletree and singletrees, by means of which thedraft-animals are secured to the sweep and the screw elevated.

From the foregoing description and the accompanying drawings theconstruction, operation, and advantages of the invention will readily beunderstood; and it will be seen that a double set of hooks is employedfor each one of the chains 14 to facilitate attachment to a stump. Theframe may, if desired, be mounted upon wheels to enable the'stump-extractor to be readily moved from place to place. y

What I claim is- In a4 stump-extractor, the combination of the frame,the rectangular cap-plate connecting the upper ends of the standards ofthe frame and provided with a central opening and having an integralsocket portion surrounding the central opening and presenting a concaveupper face, the nut having a central threaded opening and consisting ofa plate provided on its lower face with an integral convex or roundedenlargement bearing in the socket portion and moving freely therein,said plate having an upper fiat face, and having its ends perforated andextending beyond the enlargement and being provided with parallellongitudinal flanges arranged at its side edges and standing from` itsface and forming a box or easing, the In testimony that I claim theforegoing as sweep-lever arranged in the box or easing my own I havehereto affixed my siguaturein and secured to the plate ab a pointntermepresence of two witnesses.

diate of its ends, and the screw engaging the J OI-IN D. MCELYA. 5threaded opening of the nut and provided Witnesses:

with a ring and the usual Chains and hooks, J. T. HAMILTON,

substantially as described. F. B. ZARICAR.

